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Segment Information - Reconciliation of Earnings from Operations to Earnings Before Income Tax and Earnings from Unconsolidated Affiliates (Detail) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Segment Reporting [Abstract]
Earnings from operations	$ 111.8	$ 64.9
Interest and foreign exchange	23.4	23.2
Earnings before income tax and earnings from unconsolidated affiliates	$ 88.4	$ 41.7

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Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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